SkyView System Installation Guide - Dynon Avionics

11. SV-XPNDR-26X Installation, Configuration, and TestingIf upgrading from a version of SkyView software prior to v5.0, v5.0 and latercontain a software upgrade to the SV-XPNDR-26X. This software update adds theoption to have the transponder automatically switch modes as the transitionbetween ground operation and flight is detected.This software upgrade also updates the ADS-B out capability of the transponder tomeet TSO-C166B for ADS-B Out functionality. This change REQUIRES that thephysical transponder module be labeled to indicate the new TSO authorization.Failure to perform this physical modification at the same time as the softwareupdate will result in a transponder which is likely not considered airworthy byaviation regulatory agencies.Please refer to the Transponder Software Updates section of this chapter forfurther details about this process.There are two transponder modules offered by Dynon Avionics. The SV-XPNDR-262 is a Class 2transponder that is limited to use beneath 15,000 feet and under 175 knots. The SV-XPNDR-261is a Class 1 transponder that can be used above those limitations. Throughout this manual, theyare often referred to together as the SV-XPNDR-26X for instructions that apply to both versions.The SV-XPNDR-26X Mode S transponder models are DO-181D compliant Mode S level 2elsdatalink transponders, with support for ADS-B extended squitter, which also meets the relevantenvironmental requirements of DO-160F/ED-14F. The SV-XPNDR-262 has a nominal poweroutput of 125 Watts, and meets the power output requirements for Class 2. The SV-XPNDR-261has a nominal power output of 250 watts, and meets the power output requirements for Class1. The ADS-B function meets DO-260B class B0 for the SV-XPNDR-262 and class B1S for the SV-XPNDR-261. The SV-XPNDR-26X is certified to ETSO 2C112b and ETSO C166a, and to FAA TSOC112c and C166b.The FAA’s ADS-B rule currently permits class A1, A1S, A2, A3, B1S, or B1transponder-based 1090ES ADS-B transmissions for compliance once the ADS-BOut rules go into effect. Therefore, only the higher power class B1S SV-XPNDR-261will be able to meet the 2020 ADS-B Out requirement.The SV-XPNDR-26X transponder is controlled using SkyView’s on-screen menu system. Thisallows the transponder to be mounted separately from the instrument panel and reduces theamount of panel space taken by the transponder. SkyView also provides pressure altitudedirectly to the transponder, eliminating the need for a separate altitude encoder.The SV-XPNDR-26X transponder runs from either 14 volt nominal or 28 volt nominal DC powersupply with no configuration changes required.The SV-XPNDR-26X transponder responds to both legacy Mode A/C interrogations and to ModeS interrogations from both ground radar and airborne collision avoidance systems. In all cases,SkyView System Installation Guide - Revision O 11-1